Saturday, 20 July 2013

Spectrum analyzer Part IX High Voltage Supply

The workhorses of the spectrum analyzer the phase locked oscillators (PLO) need a control voltage greater than 20V. Scotty's controller pcb already has a switching converter section, but there were some problems reported on the newsgroup. So Sam Wetterlin designed a new stand alone module for this purpose. It is a
switching style design, but creates very little oscillator ripple at its input
and output, and little radiation, though it still should be encased with a fence. Since I was lucky and got my hand on a pcb set which included also some Wetterlin pcbs I decided to use his design on my analyzer build.#Soldering the module was pretty much easy and the module worked immeadetly.